Nitric oxide is involved in salicylic acid-induced flowering of Lemna aequinoctialis Welw.

被引:0
作者
Ashima Khurana
Rahul Kumar
Shashi B. Babbar
机构
[1] University of Delhi,Department of Botany
[2] University of Hyderabad,Repository of Tomato Genomics Resources, Department of Plant Sciences
[3] University of Delhi,Botany Department, Zakir Husain Delhi College
来源
Acta Physiologiae Plantarum | 2014年 / 36卷
关键词
Flowering; Induction; Nitric oxide; NO scavengers; NOS inhibitors; Salicylic acid;
D O I
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中图分类号
学科分类号
摘要
Salicylic acid (SA) is a well-known inducer of flowering in Lemna under both non-inductive and inductive photoperiod conditions. However, the underlying mechanism is not well understood. Herein, we report for the first time that nitric oxide (NO) is partially involved in SA-induced flowering in L. aequinoctialis (Syn. L.paucicostata Hegelm.). Our results demonstrated that SA-induced flowering is significantly reduced by exogenous application of NO scavengers; 2-(4-carboxyphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide and methylene blue, nitric oxide synthase inhibitors; N-ω-nitro-l-arginine and N-ω-nitro-l-arginine-methyl ester hydrochloride, and nitrate reductase inhibitor; sodium tungstate in two strains of Lemna viz. 6746 and LP6. Altogether our present findings shed a light on the new role of NO in SA-induced flowering and open interesting directions that need further investigation.
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页码:2827 / 2833
页数:6
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